Machine for pressing brick



3 Sheets-Sheet 1.

B. W. H. DAVIS 86 M. L. LOWER.

MACHINE FOR PRESSING BRICKS.

I Patented Aug. 26, 1890.

(No Model.)

(No Model.) 3 Sheets-Sheetfi. R. W. H. DAVIS & M. L. LOWER. MACHINE FOR PRBSSING BRICKS.

' No. 435,171. Patented Aug. 26, 1890.

(No Modeh) 3 Sheets-Sheet 3.

R. W. H. DAVIS & M. L. LOWER.

MACHINE FOR PRESSING BRICKS.

No. 435,171. Patented Aug. 26, 1890.

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UNITED STATES PATENT OFFICE;

RICHARD WV. H. DAVIS AND MARTIN L, LOWER, OF BLACK LICK, PENNSYLVANIA.

MACHINE FOR PRESSING BRICK.

SPECIFICATION forming part of Letters Patent No. 435,171, dated August 26, 1890.

Application filed November 1, 1889. Serial No. 328 899. (N0 model.)

To all whom it may concern:

Be it known that we, RICHARD W. H. DAVIS and MARTIN L. LOWER, residents of Black Lick, in the county of Indiana and State of Pennsylvania, have invented a new and useful Improvement in Machines for Pressing Brick; and we do hereby declare the following to be a full, clear, and exact description thereof.

Our invention relates to brick-presses, its object being to provide a brick-press which is rapid and positive in operation and in which a larger number of brick can be pressed than in the ordinary form of press heretofore employed.

It comprises, generally stated, a press having a horizontal revolving table carrying a series of press-boxes, a top pressing-plate extending part way across the table, and a pressing-plunger under the top pressing-plate and rising into the press-box, and so acting to press the brick, the revolving table having an intermittent motion, and discharging mechahism being provided, forcing the pressed brick out of the press-box, so that the entire operation of pressing and discharging the brick is performed mechanically, and consequently the machine will operate to press large quantities of brick, and the only labor necessary is in feeding the brick to the press.

The special inventions forming the subj ectmatter of this application will be hereinafter particularly pointed out and claimed.

To enable others skilled in the art to make and use our invention, we will describe the same more fully, referring to the accompanying drawings, in which Figure 1 is a top or plan View of our invention. Figs. 2, 3, and at are cross-sections on the line 2 2, Fig. 1, showing different posi- Fig.5 is a cross-section on the line 3 3, Fig. 1, the same being shown partly in full lines; and Fig. 6 is a View of another form of discharging mechanism, such as that employed for raising the brick upwardly through the press-box.

Like letters of referenceindicate like parts in each figure.

j The brick-press is supported in a suitable frame A, having the top plate a and the legs a. Extending out in the center of the top plate a is a hollow stud (Z upon which is journaled the table 0. this table extending .over the top plate of the machine-frame and having a series of openings 0 therein, the plate shown having eight such openings, and the openings being made slightly larger than the bricks to be pressed, so as to permit the bricks to pass through such openings when discharged from the press. An intermittent rotary motion is imparted to the table c by means of a mutilated cog'wheel cl, which engages with the cog-face c on the table 0 and moves it the proper distance to present each mold or press-box carried by the table first to the mechanism for pressing the brick and then to the discharging mechanism. The

mutilated cog-Wheel dis mounted in bearings 61, at one side of the top plate, and secured at the base of its shaft (1 is the bevel-gear d which engages with the bevel-gear e on the shaft 9, which is mounted in bearings 6 extending out from the frame of the machine.

In order .to hold each press-box on the revolving table 0 in proper line for the operation of the pressing apparatus hereinafter described, we provide a spring f, which is secured to the top plate a, and the free end of which has a bent portion f which fits into the teeth composing the cog-face c of the table 0, and so acts to hold it in proper line,but which spring yields as the table is turned by the mutilated cog d before referred to.

Above each opening 0 of the revolving table we secure the press-box m, these pressboXes corresponding in shape to the edges of the brick to be pressed and being open at the top and bottom, so that the top pressing-plate may close the upper end of the press-box or enter the same, as may be desired, and. the pressing-plunger may rise through thebase of the press-box and so compress the brick when confined by the press-box and top pressplate, as hereinafter described. boxes can of course be changed according to the size of brick to be pressed, and, if preferred, they may be made to fit within. the opening 0 of the revolving table 0, the only advantage of such construction being, how- The press- 5 ever, that the lever mechanism does not require so long a stroke.

At any suitable point in the frame of the machine is located thepressing apparatus, as shown, this pressing apparatus being supported in the guide-frame G, extending down from the top plate a, and composed of the two side bars gand cross-bar g. At the base of the guide-frame, mounted in slotted bearings g therein, is the fulcrum-bar h, this bar having the journals or extensions h, which pass through the slots g in the guide-frame, and the straps 7c fit on said journals h and extend up through the top plate of the machine, the inner strap extending up through the hollow stud d, which forms the pivotal bearing for the table a, and said straps having secured at their upper ends the crossbeam Z, carrying the top pressing-plate Z. The top pressing-plate when drawn down, as hereinafter described, fits closely to the upper face of the press-box m, and, if desired,it may have a projecting face to enter within the press-box, and after each pressing operation it rises clear of the press-box, so as to permit the different boxes to pass under it. The fulcrum-bar h has secured to it the lugs h which rest upon the cross-bar g of the frame G, and has also the lever 11., extending out on the opposite side thereof and engaging with the lug or pin a on the rear face of the pinion e, so that upon each revolution of the pinion e the lever a is drawn down. Said lever is raised by a suitable spring n secured thereto and to the top plate a of the machine-frame. During the first downward motion of the lever the pressure thereof 'is sustained by the lugs h bearingon the crossbar 9', and consequently its first action is to draw down the fulcrum-bar, which isthen supported on the lugs 7L2, this operation, through the journals h, drawing down the straps 7c and top pressing-plate Z. Movingin slides g in the frame G is the pressing-plunger p, which rests within a seat therefor in the top plate a, and during the pressing operation rises thence through the opening 0' in the revolving table and enters the base of the press-box m, which is then under the top pressing-plate Z. This plunger 19 has at the 5 base thereof the shoe p, which engages with the arm 10 on the fulcrum-bar h, and is forced upwardly by said arm. As soon, therefore,

as the top pressing-plate Z is drawn down firmly upon the top of the press-box, as above described, its straps k then act as a support for the fulcrum-bar h, which turns therein, and as the lever 'nis forced farther down through the arm 19 on the lever it forces the plunger 19 upwardly into the mold and imparts the necessary pressure to the brick contained therein. The plunger 1? is withdrawn by suitable spring mechanism, as shown at 0. In order to prevent the crushing or breaking of the parts, we generally connect the shoe p to the pressing-plunger p by what might be termed a sliding spring-joint, as shown at;

13 the shoe having a pin 13 extending out therefrom and passing through a socket 10 at the base of the plunger, and a strong spring being confined between the base of the plunger and a shoulder at the upper end of the shoe p. This spring yields only on very heavy pressure, such as might be brought upon the mechanism in case the parts did not fit together properly, in which case it will yield to prevent the breakage of the parts.

The mechanism for discharging the brick is preferably arranged to force the brick downwardly from the press-box through the revolving table and through an opening in the top plate of the frame onto a traveling belt passing under the frame and acting to carry the brick away from themachine and to a proper point for subsequent handling. The mechanism for this purpose is shown particularly in Fig. 2, the discharging-lever 0" being pivoted to the lever 01 and extending up through a guideway r in the top plate a, and thence extending over the revolving table and its end passing through a guide-bearing r which extends from the top plate a over the table 0 and supports the end of the lever r in proper line with the press-box from which the brick is to be discharged. The lever r carries at the base thereof a plate which substantially corresponds in shape to the interior of the press-box, but which moves freely therein, and when the lever is drawn down by the pressing-lever n the discharging-plate r passes into the press-box and by pressure upon the brick forces it down through the opening a in the revolving table and thence onto the endless belt .9, which passes around a roller mounted in bearings 8, depending from the top plate roof the machine-frame, this endless belt passing to any particular or suitable place for the removal of the brick.

In case of hand-operated machines or of machines for pressing fire-brick, itbeco mes neces sary to raise the brick out of the press-box, instead of pressing them downwardly through the same, and for this purpose we invert the mechanism, as shown in Fig. 6, the power being transmitted from the lever n to the ver tical reciprocating discharge-arm a" by means of the leverr carrying the discharging-plate r, this arm in such case being mounted in suitable guides at, depending from the top plate a and rising at each stroke of the press ing apparatus upwardly through the revolv ing table and the press-box, and forcing the brick contained therein above the press-box, so that it can be removed from the machine.

In the operation of pressing brick in the apparatus above described we employ two or more feeders for the machine, the feeding thereof being generally done by boys. All that is necessary is to place the brick in the proper position within the press boxes, and in the regular operation of the machine the press-boxes are carried around on the rev0lving table until they are brought successively TIO under the top pressing-plate and above the pressing-plunger, the revolving table moving intermittently and bringing the press-boxes into this position. As soon as each press-box is brought into position, the lug n, by-engaging with the lever n, acts first to draw the top pressing-plate down upon the pressbox and then acts to raise the plunger and force it into the press-box and compress the brick within the box and against the plate I, a very strong pressure being generated in this way, as all the force of the plunger in pressing the brick is sustained by the straps k of the yoke, carrying the top pressing-plate Z, which act as bearings for the lever mechanism raising the plunger. As soon as the lug n has completed its work and passes the end of the lever '11, the spring a raises that lever, so quickly withdrawing the plunger and raising the yoke carrying the top pressing-plate, and immediately thereafter the mutilated cog engages with the revolving table and carries another press-box under the pressing apparatus. As the operation proceeds, the brick which has been pressed is drawn underthe discharginglever r, and upon the next downstroke of the lever 42 the lever r is drawn down, and by means of the discharging-plate 'r' carried thereby, the brick is forced through the pressbox and the opening 0 in the revolving table onto the traveling belt, so discharging the brick from the press-box and providing for the carrying of the same away from the machine. The operation of the machine is positive and rapid, and a large number of brick can be accurately pressed by the machine without any labor to the operator further than the feeding of the brick to the press.

What we claim as our invention, and desire to secure by Letters Patent, is

1. In a brick-press, the combination of the horizontally-revolving table, a beam extending partly across the same and carrying a top pressing-plate fitting upon the press-boxes on said table, and straps or bars extending down 45 from said beanr and engaging with a fulcrumbar mounted in slotted bearings on a frame under the table, substantially as and for the purposes set forth.

2. In a brick-press, the combination of the press-box, the fulcrumbar extending through slotted bearings in the supporting-frame and connected by straps to the top pressing-plate, and having lugs extending out therefrom and bearing on the cross-bar of said frame, and the operating-lever secured to said fulcrum-bar, substantially as and for the purposes set forth.

3. In a brick-press, the combination of the press box, top pressing-plate, and pressingplunger, the fulcrum-bar extending through slotted bearings in the frame and connected by straps to the top pressing-plate, and having lugs bearing upon the cross-bar of the frame, and having an arm engaging with the shoe of the pressing-plunger, and the operatingwlever secured to said fulcrum-bar, substantially as and for the purposes set forth.

In testimony whereof we, the said RICHARD W. H. DAvIs and MARTIN L. LOWER, have hereunto set our hands.

RICHARD W. H. DAVIS.

MARTIN L. LOWER.

'Witncsses:

JOHN GAFFNEY, A. K. SroNEBAoK. 

